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SQL Server Application Role Activation from within Delphi

Posted on 2004-08-26
Last Modified: 2010-04-05
Hi all,


I am currently developing an app that connects to a SQL Server 2000 database. I would very much like to make use of the SQL Server Application Role functionality, but I cannot seem to get it working. I have tried using a ADOStoredProc, ADOQuery, ADOCommand and even the ADOConnection directly to execute the stored procedure to activate using the Application Role.

What I could understand from all the documentation is that I must switch the current open connection from the user login password (in my case using Windows Authentication) by using a stored procedure called master.dbo.sp_SetAppRole with parameters @rolename and @password.

I have successfully tested this in SQL Query Analyzer, but cannot get this working from within Delphi.

Johan Swart
Question by:johan777
  • 2

Accepted Solution

bpana earned 500 total points
ID: 11906822

I made a test and it is working as expected.

Drop a TADOConnection on the form. Set it's ConnectionString property the the database containing the role.
On the Form's create method:
procedure TForm1.FormCreate(Sender: TObject);
  ADOConnection1.Execute('EXEC sp_setapprole ''Role_Inventory'', ''role''');

drop a TADOTable on the form. Set it's connection to the ADOConnection1. Leave the Active property set to False

procedure TForm1.Button1Click(Sender: TObject);
  ADOTable1.TableName := 'Inventory';


Expert Comment

ID: 11906930
btw, i'm using SQL Authentication.

Author Comment

ID: 11908839
Hi Bogdan,

Thanx very much!!! It works.

I appreciate the help!

Johan Swart

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